The Boston public school district has had difficulty maintaining on-time bus service for its students (A Year Later, School Buses Sill ate, Boston Globe, October ly woeful route. Historically, the bus service on the route has been, on average, 12 minutes late. After the schedule adjustment, the firs district claimed that the schedule adjustment was an improvement-students were not as late Assume a population standard minutes. Which of the following can be used to determine whether the schedule adjustment reduced the average lateness time of 12 minutes? t 36 runs were an average of eight minutes late. As a result, the Boston public school deviation for bus arrival time of 12 Multiple Choice Ho : - 12,Ha :